Hertfordshire · Heat pump installation
Heat pump installers in Great Wymondley
Need air source heat pumps in Great Wymondley? We diagnose first, fix the price and book the work around you, then sign it off with written records.
- Working out whether radiators need upsizing
- Comparing heat pump types
- Planning and permitted development questions
About our air source heat pumps in Great Wymondley
An air-to-water heat pump heats water to a lower temperature than a typical boiler which means some radiators may need upsizing. We check each radiator against the room’s heat loss and anything that needs changing is in the quote. If you’re dealing with checking emitters for a heat pump and moving away from fossil-fuel heating, we can help.
Homes around Great Wymondley typically have room outside for a heat pump, so the design focuses on heat loss and radiators.
Looking after a system is mostly common sense: clear space around the outdoor unit, the cleaning the manual describes and a service at the recommended interval. It also keeps you on the right side of any warranty terms that ask for servicing.
- Where
- Great Wymondley (SG4)
- Region
- Hertfordshire
- Pricing
- A fixed-price quote up front
- Prices
- Air-to-water £8,000–£16,000 before any grant (0% VAT for homes)
- Approvals
- F-Gas certified, NICEIC approved, MCS
- Telephone
- 07833 053749
- Updated
- 30 October 2026
What air conditioning won’t do
We will always give you a straight diagnosis, so here’s what this work can’t put right:
- Getting planning permission or listed building consent on your behalf
- Disconnecting or servicing a gas boiler
- Tax rulings, which only HMRC can give
If you’re not sure, just give us a ring on 07833 053749 or email us and we will give you a straight answer.
What the work covers
- Underfloor heating
- Air-to-water heat pumps
- Radiator systems
- Hot water cylinders
- Homes heated by oil, LPG or gas
- Air-to-air heat pumps
System by system
VAT on heat pumps
Heat pumps in homes carry 0% VAT until 31 March 2027, and 5% after that, under HMRC Notice 708/6. Businesses pay the standard rate.
Radiators and underfloor heating
Underfloor heating suits a heat pump’s lower flow temperature, and we can connect to it where it’s already in.
Homes in Great Wymondley and heat pumps
About 31 miles out from central London, Great Wymondley is part of the South East area we work across. Great Wymondley’s centre falls inside the Great Wymondley Conservation Area. Historic England lists about 17 buildings and structures within half a mile of the centre of Great Wymondley, including Church of St Mary the Virgin (church of England) (grade I). For a heat pump, permitted development does not apply within the grounds of a listed building, and in a conservation area the outdoor unit can’t go on a wall or roof facing a road, so we check with North Hertfordshire council, normally the planning authority here where necessary.
Knebworth House, roughly 4.9 miles south, is a reminder to check your home’s listing status: permitted development does not cover listed buildings. Live in one of the older houses around Church of St Mary the Virgin? Expect the survey to look closely at heat loss and at the building’s planning status.
Great Wymondley is about 2 miles east of Hitchin, in Hertfordshire. Homes and businesses alike in Great Wymondley, we can help with air source heat pumps. We reply to enquiries the same working day and our emergency line runs 24/7. Count every place we list in Hertfordshire and you reach 381, with Great Wymondley on the list. We also work in London, around 31 miles away.
Our engineers cover all of the SG4 postcode area for air source heat pumps. If you need air source heat pumps at a property on Graveley Road, Hitchin Road and Arch Road or anywhere close by, our engineers can take on the work. We also cover the places around Great Wymondley: Little Wymondley (1 mile south), Poets Estate (1 mile north-west), Graveley (1 mile south-east), Titmore Green (1 mile south) and Willian (1 mile north-east). Larger places within reach include Stevenage (3 miles south-east), St Albans (14 miles south), Welwyn Garden City (10 miles south) and Harpenden (10 miles south-west).
Near you in Great Wymondley
Around Great Wymondley, our work takes us to homes and businesses near Hitchin Girls' School, The Green Man pub and Kingshott School and the streets around them. For rail, the closest station is Hitchin station, about 1.4 miles north-west. Other landmarks nearby include North Hertfordshire Museum (2 miles west) and Lister Hospital (1.6 miles south-east). Open spaces near Great Wymondley include Purwell Ninesprings.
Landlords, agents and facilities managers
For anyone managing more than one building, we can plan visits across the portfolio and price them together. Each property gets its own records, so each one has its own history.
From a single flat to a whole estate, you get the same standard: diagnosis, a fixed price, access agreed with the people on site and paperwork at the end.
Your questions about air source heat pumps in Great Wymondley
Is the heat pump grant available in Great Wymondley?
Yes, the scheme covers homes in England, including Great Wymondley, if they qualify. Air-to-water and ground source systems attract £7,500. Air-to-air gets £2,500, but only where it takes over from fossil-fuel heating and covers the whole home’s heating demand. The installer applies, and we’re MCS certified.
Will you come out to Great Wymondley?
We do. Villages and hamlets get the same service as the bigger towns. We’re based in East Grinstead and plan each visit so the job can be finished in one trip where possible.
Do I need to service the system to keep the warranty?
Check the manufacturer’s terms. Some manufacturers make regular servicing by a qualified engineer a condition of the warranty, so check the terms or ask us. Either way, keep a record of every service.
Do you work on systems someone else installed?
Yes. Systems fitted by other companies are fine from all the leading brands. Send us the make and model, and any records you have.
Is a heat pump permitted development?
In England, many air source heat pumps on houses can be permitted development, if the conditions are met. The outdoor unit must be 1.5 m³ or less, comply with MCS 020(a), not be cooling-only and not be within a listed building’s curtilage.
Are you F-Gas certified?
We hold F-Gas company certification, which the law requires for any business working on refrigerant. NICEIC approval, MCS certification for heat pumps and Checkatrade membership sit alongside it.
What warranty do I get?
Warranty is the manufacturer’s own, on its terms. Terms differ by brand, and we set them out on your quote.
Towns and villages near Great Wymondley
Other services in Great Wymondley
The process
Every visit follows the same order: check the plan with you, put the dust sheets down, do the work, test what we’ve done and explain it all to you. The visit itself takes a few days on site, depending on the cylinder, the radiators and the pipework involved. A few pictures help us make the most of a visit to Great Wymondley.
- First, a chat about the property and your goals for the heating.
- A survey covers heat loss, radiators, hot water and where the outdoor unit could sit.
- We recommend air-to-water or air-to-air and check the grant position.
- We install the heat pump and connect it up.
- After commissioning, you get the MCS certificate and a handover.
How to prepare
- Move furniture away from the wall where we’ll be working
- Make sure someone can let us in at the agreed time
- Keep pets and children away from the work area
How to get a quote
Here’s what helps us quote: the address and the type of property, a few pictures, the brand and model of anything already fitted and any symptoms, from error codes to drips. Then call 07833 053749, or email if that’s easier.
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What a customer said
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager